Beam Tracing in Inhomogenous Anisotropic Plasmas
An symptomatic method for solving the wave equation in the short-wavelength limit is presented. This method, called beam tracing, takes into account the wave properties, ie., diffraction and interference. It reduces the full wave equation to a set of ordinary differential equations. In this respect, it differs from all other asymptotic techniques describing diffraction which end up with much more complicated partial differential equations. The resulting system of beam tracing equations is expressed in terms of of the same Hamiltonian function as in geometric optics (ray tracing), allows powerful numerical solving algorithms. Thus the beam tracing combines the simplicity of ray tracing with a description of the wave phenomena, which are not included in the wave tracing. The beam tracing technique provides an efficient tool for calculation of wave fields in all problems where the short-wave approximation is applicable such as rf heating, current drive and plasma diagnostics with microwave beams.
Bibliographic Reference: Article: Physics of Plasmas, 5 (1998) 10, 3529-3541
Record Number: 199910415 / Last updated on: 1999-03-19
Original language: en
Available languages: en